Lepton-Flavor Violation with Non-universal Soft Terms

Details Lepton-Flavor Violation with Non-universal Soft Terms Lepton-Flavor Violation with Non-universal Soft Terms

2001-01-22

arxiv.org/abs/hep-ph/0101250v3

JHEP 0107:001,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 6 figures minor changes

Scientific paper

10.1088/1126-6708/2001/07/001

We study the lepton-flavor violation processes tau ->mu gamma and mu->e gamma in two different examples of models with non-universal soft breaking terms derived from strings. We show that the predictions are quite different from those of universal scenarios. Non-universal A-terms provide an interesting framework to enhance the supersymmetric contributions to CP violation effects. We observe that in the case of the lepton-flavor violation we study, the non-universality of the scalar masses enhances the branching ratios more significantly than the non-universality of the A-terms. We find that the current experimental bounds on these processes restrict both the parameter space of the models and the texture of the Yukawa couplings which predicts the lepton masses, providing at the same time an interesting experimental test for physics beyond the Standard Model.

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